Bitcoin Developers Propose Freezing Coins Vulnerable to Quantum Attacks

The promise of Bitcoin has always been that no one can access your coins without your private key. However, this promise is being challenged by the developer community as they attempt to build defenses against future quantum computers. A recently updated proposal, Bitcoin Improvement Proposal (BIP)-361, suggests forcing bitcoin holders to migrate their coins to new quantum-resistant addresses or risk having them frozen permanently. This move is in response to a Google report warning that a sufficiently powerful quantum machine could compromise the Bitcoin blockchain more easily than initially thought. The proposal has sparked backlash in the community, with some arguing it goes against the fundamental principles of Bitcoin, including sovereign control over funds. The proposed migration would occur in three phases, with the first phase blocking new bitcoin from being sent to old-style addresses, the second phase rendering old-style signatures invalid, and a potential third phase allowing holders to recover frozen coins using zero-knowledge proofs. Developers argue this is a defensive measure to protect the Bitcoin ecosystem, while others see it as an authoritarian and confiscatory move.